:root{--brand:#0f766e;--ink:#14213d;--muted:#64748b;--line:#e2e8f0;--bg:#f8fafc;--card:#fff}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;line-height:1.75}
a{color:inherit;text-decoration:none}.site-header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.navbar{padding:12px 5vw 10px}.nav-container{display:flex;align-items:center;gap:28px;width:100%}.navbar-brand{display:flex;align-items:center}.navbar-brand__logo{width:126px;height:auto;display:block}.navbar-collapse{margin-left:auto}.navbar-nav{display:flex;align-items:center;gap:22px;list-style:none;margin:0;padding:0}.nav-link{font-size:15px;color:#334155}.nav-link.active,.nav-link:hover{color:var(--brand)}.library-search-bar{display:flex;gap:24px;align-items:center;justify-content:space-between;padding:12px 5vw;border-top:1px solid #eef2f7}
.brand{font-weight:800;color:var(--brand);font-size:20px}.search-form{display:flex;gap:8px;min-width:min(520px,52vw)}.search-form input{width:100%;border:1px solid var(--line);border-radius:8px;padding:10px 12px;background:#fff}.search-form button,.download-button{border:0;border-radius:8px;background:var(--brand);color:#fff;padding:10px 18px;font-weight:700;cursor:pointer}
.page{width:min(1240px,92vw);margin:0 auto;padding:34px 0 56px}.library-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:24px;align-items:start}.library-main{min-width:0}.library-sidebar{position:sticky;top:118px}.library-hero{padding:34px 0 24px}.eyebrow{margin:0 0 8px;color:var(--brand);font-weight:700;text-transform:uppercase;letter-spacing:.04em}.library-hero h1{font-size:36px;line-height:1.25;margin:0 0 12px}.library-hero p{max-width:820px;color:var(--muted);margin:0}.hero-keywords{margin-top:12px!important;color:#334155!important;font-weight:700}.category-strip{display:flex;gap:10px;flex-wrap:wrap;margin:10px 0 28px}.category-strip a{padding:8px 12px;border:1px solid var(--line);border-radius:999px;background:#fff;color:#334155}.resource-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.resource-card{background:var(--card);border:1px solid var(--line);border-radius:8px;min-height:230px}.resource-card a{display:flex;flex-direction:column;height:100%;padding:20px}.resource-card__type{align-self:flex-start;background:#e6fffb;color:var(--brand);border-radius:6px;padding:2px 8px;font-size:12px;font-weight:800}.resource-card h2{font-size:18px;line-height:1.45;margin:14px 0 8px}.resource-card p{color:var(--muted);font-size:14px;margin:0 0 14px}.resource-card__meta{margin-top:auto;color:#475569;font-size:13px}.seo-copy{margin-top:30px;background:#fff;border:1px solid var(--line);border-radius:8px;padding:24px}.seo-copy h2{font-size:20px;margin:0 0 10px}.seo-copy p{color:var(--muted);margin:0 0 14px}.topic-links{display:flex;flex-wrap:wrap;gap:10px}.topic-links a{border:1px solid var(--line);border-radius:6px;background:#fff;color:#0f766e;padding:7px 10px;font-weight:700}.pagination{display:flex;justify-content:center;gap:18px;align-items:center;margin-top:32px}.pagination a{color:var(--brand);font-weight:700}
.breadcrumb{display:flex;gap:8px;color:var(--muted);font-size:14px;margin:8px 0 22px}.detail-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:24px}.detail-main,.panel-card,.author-card{background:#fff;border:1px solid var(--line);border-radius:8px}.detail-main{padding:30px}.file-heading{border-bottom:1px solid var(--line);padding-bottom:22px;margin-bottom:22px}.file-type{display:inline-block;background:#ecfeff;color:#0e7490;border-radius:6px;padding:3px 9px;font-size:12px;font-weight:800}.file-heading h1{font-size:30px;line-height:1.35;margin:12px 0}.meta-line,.download-note,.site-footer{color:var(--muted)}.content-section{margin-top:26px}.content-section h2{font-size:20px;margin:0 0 10px}.takeaways{padding-left:22px}.preview-frame{width:100%;min-height:680px;border:1px solid var(--line);border-radius:8px;background:#f8fafc}.preview-fallback{border:1px solid var(--line);border-radius:8px;background:#f8fafc;color:var(--muted);padding:22px}.preview-fallback p{margin:0}.download-panel{display:flex;flex-direction:column;gap:18px}.panel-card{padding:20px}.panel-kicker{margin:0 0 14px;color:var(--brand);font-weight:800}.file-facts{margin:0 0 18px}.file-facts div,.author-card__contact div{display:flex;justify-content:space-between;gap:14px;border-bottom:1px solid var(--line);padding:9px 0}.file-facts dt,.author-card__contact dt{color:var(--muted)}.file-facts dd,.author-card__contact dd{margin:0;font-weight:700;text-align:right}.download-button{display:block;text-align:center}.related-list{list-style:none;padding:0;margin:0}.related-list li{border-top:1px solid var(--line);padding:10px 0}.related-list li:first-child{border-top:0}.related-list a{color:#334155}.author-card{position:relative;padding:24px;color:#436184}.author-ribbon{position:absolute;right:14px;top:0;background:#ff9f43;color:#fff;font-weight:800;line-height:1.15;padding:8px 10px;border-radius:0 0 4px 4px;box-shadow:0 8px 16px rgba(255,159,67,.18)}.author-card__head{display:grid;grid-template-columns:72px 1fr;gap:14px;align-items:center;margin:4px 0 18px;padding-right:62px}.author-card__logo{width:70px;height:auto}.author-card h2{font-size:22px;color:#14213d;margin:0}.author-card__head p{margin:4px 0 0;color:#617895;font-size:14px;line-height:1.5}.author-card__bio{border-top:1px solid var(--line);padding-top:18px;margin:0 0 16px;font-size:15px;line-height:1.9}.author-card__contact{margin:0}.author-card__contact a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}.author-card__links{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.author-card__links a{border:1px solid var(--line);border-radius:6px;padding:6px 9px;color:#334155;background:#f8fafc}.site-footer{background:#e9e9e9;color:#707985;margin-top:20px;padding:34px 5vw}.site-footer__inner{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,420px);gap:48px;align-items:start;max-width:1440px;margin:0 auto}.site-footer h2{font-size:16px;color:#1f2937;margin:0 0 12px}.site-footer p{margin:0}.site-footer__about p{max-width:780px;font-size:13px;line-height:1.8}.site-footer__copyright{margin-top:26px!important;font-size:12px}.site-footer__links{display:flex;flex-wrap:wrap;gap:10px 16px;justify-content:flex-end;margin-bottom:16px}.site-footer__links h2{flex:0 0 100%;text-align:right}.site-footer__links a{font-size:13px;color:#475569;text-decoration:underline;text-underline-offset:3px}
@media (max-width:1100px){.navbar-nav{gap:12px}.nav-link{font-size:14px}.library-layout{grid-template-columns:1fr}.library-sidebar{position:static}.resource-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:900px){.nav-container,.library-search-bar{align-items:flex-start;flex-direction:column}.navbar-collapse{margin-left:0;width:100%}.navbar-nav{align-items:flex-start;flex-wrap:wrap}.search-form{min-width:100%;width:100%}.resource-grid{grid-template-columns:1fr}.detail-layout{grid-template-columns:1fr}.library-hero h1,.file-heading h1{font-size:26px}.preview-frame{min-height:460px}.site-footer__inner{grid-template-columns:1fr;gap:24px}.site-footer__links,.site-footer__links h2{justify-content:flex-start;text-align:left}}